Kelle Roos has been with Derby County since early 2014 and has evidently developed as a goalkeeper throughout his time with the club.
The former Dutch youth international – who spent time in PSV Eindhoven’s Academy as a youngster, joined the Rams from non-league side Nuneaton Borough and spent time on loan with Rotherham United, AFC Wimbledon, Bristol Rovers, Port Vale and Plymouth Argyle before his emergence in the 2018/19 season under former manager Frank Lampard.
His most noteworthy spell out on loan came at AFC Wimbledon, where he helped the Dons to promotion via the Play-Offs in the 2015/16 season.
Five years after signing for the club, Roos finally made his league debut for Derby during the 2018/19 campaign - and it proved to be a memorable season for the goalkeeper.
Roos had to wait patiently for his chance to shine for the Rams. Showing patience and a calm head, the goalkeeper was forced into action following an injury to regular choice Scott Carson in early 2019.
Roos grabbed the opportunity of first team football with both hands and impressed with a string of fine performances. His display against Premier League side Southampton in the FA Cup earned him plaudits and his consistency saw him firmly in the driving seat.
He and went on to make 24 appearances for the Rams in all competitions as Derby reached the Sky Bet Championship Play-Off Final.
He started the 2019/20 season as first-choice goalkeeper under Phillip Cocu but lost his place midway through the campaign, before returning to the side in the closing weeks of the season.
He battled for a starting spot during the 2020/21 campaign, deputising for David Marshall when the goalkeeper suffered an injury or illness, and finished the season as the number one choice as Derby County secured their Sky Bet Championship status on the final day of the season following a 3-3 draw against Sheffield Wednesday.